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Corona discharge for demostration to students

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LAN_403

Martin Slinning

Sat Feb 04 2017, 04:09PM

Registered Member #61375 Joined: Sat Dec 17 2016, 05:45PM
Location: Norway Aalesund
Posts: 13

Hi.
I am teacher in electrics in a Norwegian highschool. I am planning on making something to demonstrate corona discharge for the students during their high voltage part of the semester. I am interested in suggestions on how to get a good visible demonstration of the corona discharge.
To get high voltage i have several MOTs, some OBITs and also several zvs drivers with flyback transformers. I think the zvs + flyback gives the safest approach, but it might not provide the nessesary power?

All suggestions will be greatly appreciated.

Best regards Martin Slinning

Conundrum

Tue Feb 14 2017, 05:50AM

Registered Member #96 Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4059

Hi, I'd consider using Neon (Ne) tube as these are much safer.
A good source is old defective pinball screens as typically the 7 segment variety eat their ITO front cover but otherwise work if RF excited.

Also worth looking on Ebay, I used to have a neon tube which showed all sorts of cool discharge modes

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